Which of the following reactions increases the production of dihydrogen from synthesis gas?
(i)CH_{4}(g)+H_{2}O (g)\xrightarrow[Ni]{1270K} CO(g)+3H_{2}(g)

(ii)C(s)+H_{2}O (g)\overset{1270K}{\rightarrow}CO(g)+H_{2}(g)

(iii)CO(g)+H_{2}O (g)\xrightarrow[catalyst]{673K}CO_{2}(g)+H_{2}(g)

(iv)C_{2}H_{6}+2H_{2}O \xrightarrow[Ni]{1270K}2CO+5H_{2}
 

Answers (1)

The answer is the option (iii)CO(g)+H_{2}O (g)\xrightarrow[catalyst]{673K}CO_{2}(g)+H_{2}(g)

Carbon monoxide can be reacted with syngas mixtures using steam and iron chromate as enhancers to produce extra dihydrogen.

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